โญ Cornstarch (Best Fat-Free Option)
1:1 (use equal amount to arrowroot powder)Cornstarch is a fine powder derived from corn and acts as an effective thickening and binding agent in baked goods. It helps create a tender crumb by interfering with gluten formation and absorbing moisture, similar to arrowroot powder.
To ensure success, sift the cornstarch with the flour to prevent clumping and maintain even distribution. Avoid using excessive amounts as it can make the dough too soft and cause spreading.
Compared to arrowroot, cornstarch yields a very similar texture and appearance in sugar cookies, preserving their delicate crumb and slight chewiness without impacting flavor.